Reverse AppBarLayout.ScrollingViewBehavior
I have a ToolBar and Recyclerview wrapped in a Coordinatorlayout. The RecyclerView is populated with messages from our api and are stacked from the bottom. (Like a chat application)
//Set the layout manager
LinearLayoutManager layoutManager = new LinearLayoutManager(requireContext());
layoutManager.setStackFromEnd(true);
layoutManager.setReverseLayout(true);
binding.listMessages.setLayoutManager(layoutManager);
I'd like to define a custom ReverseScrollBehavior by overriding the AppBarLayout.ScrollingViewBehavior to inverse it's behavior.
So when I scroll up, the toolbar hides and when I scroll back down (to the bottom) the toolbar shows.
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/list_messages"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none"
app:stackFromEnd="true"
app:reverseLayout="true"
app:layout_behavior="com.rootsoft.kot.utils.ReverseScrollBehavior" />
I'd like to use the ScrollingViewBehavior for this rather then overriding the onTouch
UPDATE
What I'm trying to achieve is to get the inverse of the current appbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown and when you scroll back down, it hides.
My scrollflags are: app:layout_scrollFlags="scroll|enterAlways|snap"
android asked Nov 14 '18 at 14:56
VerhelstVerhelst
76621537
add a comment |
I have a ToolBar and Recyclerview wrapped in a Coordinatorlayout. The RecyclerView is populated with messages from our api and are stacked from the bottom. (Like a chat application)
//Set the layout manager
LinearLayoutManager layoutManager = new LinearLayoutManager(requireContext());
layoutManager.setStackFromEnd(true);
layoutManager.setReverseLayout(true);
binding.listMessages.setLayoutManager(layoutManager);
I'd like to define a custom ReverseScrollBehavior by overriding the AppBarLayout.ScrollingViewBehavior to inverse it's behavior.
So when I scroll up, the toolbar hides and when I scroll back down (to the bottom) the toolbar shows.
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/list_messages"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none"
app:stackFromEnd="true"
app:reverseLayout="true"
app:layout_behavior="com.rootsoft.kot.utils.ReverseScrollBehavior" />
I'd like to use the ScrollingViewBehavior for this rather then overriding the onTouch
UPDATE
What I'm trying to achieve is to get the inverse of the current appbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown and when you scroll back down, it hides.
My scrollflags are: app:layout_scrollFlags="scroll|enterAlways|snap"
android asked Nov 14 '18 at 14:56
VerhelstVerhelst
76621537
I'm just trying to do the inverse of the currentappbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown. My scrollflags are:app:layout_scrollFlags="scroll|enterAlways|snap"
– Verhelst
Nov 19 '18 at 13:39
@Cheticamp I've already created a ReverseScrollBehavior extending theAppBarLayout.Behaviorbut I don't know which methods to override in order to achieve the effect that . I'm looking for.
– Verhelst
Nov 19 '18 at 13:42
I thinkappbar_scrolling_view_behaviordose the same what you want. When you scroll up, It hides the toolbar.
– Rumit Patel
Nov 22 '18 at 13:45
@RumitPatel It depends on the context of scrolling up. I mean when the content scrolls up. so when you drag your finger from the center to the bottom, you scroll the content up, I want to hide the toolbar.
– Verhelst
Nov 23 '18 at 14:35
add a comment |
I have a ToolBar and Recyclerview wrapped in a Coordinatorlayout. The RecyclerView is populated with messages from our api and are stacked from the bottom. (Like a chat application)
//Set the layout manager
LinearLayoutManager layoutManager = new LinearLayoutManager(requireContext());
layoutManager.setStackFromEnd(true);
layoutManager.setReverseLayout(true);
binding.listMessages.setLayoutManager(layoutManager);
I'd like to define a custom ReverseScrollBehavior by overriding the AppBarLayout.ScrollingViewBehavior to inverse it's behavior.
So when I scroll up, the toolbar hides and when I scroll back down (to the bottom) the toolbar shows.
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/list_messages"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none"
app:stackFromEnd="true"
app:reverseLayout="true"
app:layout_behavior="com.rootsoft.kot.utils.ReverseScrollBehavior" />
I'd like to use the ScrollingViewBehavior for this rather then overriding the onTouch
UPDATE
What I'm trying to achieve is to get the inverse of the current appbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown and when you scroll back down, it hides.
My scrollflags are: app:layout_scrollFlags="scroll|enterAlways|snap"
android asked Nov 14 '18 at 14:56
VerhelstVerhelst
76621537
I have a ToolBar and Recyclerview wrapped in a Coordinatorlayout. The RecyclerView is populated with messages from our api and are stacked from the bottom. (Like a chat application)
//Set the layout manager
LinearLayoutManager layoutManager = new LinearLayoutManager(requireContext());
layoutManager.setStackFromEnd(true);
layoutManager.setReverseLayout(true);
binding.listMessages.setLayoutManager(layoutManager);
I'd like to define a custom ReverseScrollBehavior by overriding the AppBarLayout.ScrollingViewBehavior to inverse it's behavior.
So when I scroll up, the toolbar hides and when I scroll back down (to the bottom) the toolbar shows.
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/list_messages"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none"
app:stackFromEnd="true"
app:reverseLayout="true"
app:layout_behavior="com.rootsoft.kot.utils.ReverseScrollBehavior" />
I'd like to use the ScrollingViewBehavior for this rather then overriding the onTouch
UPDATE
What I'm trying to achieve is to get the inverse of the current appbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown and when you scroll back down, it hides.
My scrollflags are: app:layout_scrollFlags="scroll|enterAlways|snap"
android android asked Nov 14 '18 at 14:56
VerhelstVerhelst
76621537
asked Nov 14 '18 at 14:56
VerhelstVerhelst
76621537
edited Nov 19 '18 at 13:40
Verhelst
asked Nov 14 '18 at 14:56
VerhelstVerhelst
76621537
asked Nov 14 '18 at 14:56
VerhelstVerhelst
76621537
asked Nov 14 '18 at 14:56
VerhelstVerhelst
76621537
76621537
I'm just trying to do the inverse of the currentappbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown. My scrollflags are:app:layout_scrollFlags="scroll|enterAlways|snap"
– Verhelst
Nov 19 '18 at 13:39
@Cheticamp I've already created a ReverseScrollBehavior extending theAppBarLayout.Behaviorbut I don't know which methods to override in order to achieve the effect that . I'm looking for.
– Verhelst
Nov 19 '18 at 13:42
I thinkappbar_scrolling_view_behaviordose the same what you want. When you scroll up, It hides the toolbar.
– Rumit Patel
Nov 22 '18 at 13:45
@RumitPatel It depends on the context of scrolling up. I mean when the content scrolls up. so when you drag your finger from the center to the bottom, you scroll the content up, I want to hide the toolbar.
– Verhelst
Nov 23 '18 at 14:35
add a comment |
I'm just trying to do the inverse of the currentappbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown. My scrollflags are:app:layout_scrollFlags="scroll|enterAlways|snap"
– Verhelst
Nov 19 '18 at 13:39
@Cheticamp I've already created a ReverseScrollBehavior extending theAppBarLayout.Behaviorbut I don't know which methods to override in order to achieve the effect that . I'm looking for.
– Verhelst
Nov 19 '18 at 13:42
I thinkappbar_scrolling_view_behaviordose the same what you want. When you scroll up, It hides the toolbar.
– Rumit Patel
Nov 22 '18 at 13:45
@RumitPatel It depends on the context of scrolling up. I mean when the content scrolls up. so when you drag your finger from the center to the bottom, you scroll the content up, I want to hide the toolbar.
– Verhelst
Nov 23 '18 at 14:35
I'm just trying to do the inverse of the current
appbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown. My scrollflags are: app:layout_scrollFlags="scroll|enterAlways|snap"– Verhelst
Nov 19 '18 at 13:39
I'm just trying to do the inverse of the current
appbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown. My scrollflags are: app:layout_scrollFlags="scroll|enterAlways|snap"– Verhelst
Nov 19 '18 at 13:39
@Cheticamp I've already created a ReverseScrollBehavior extending the
AppBarLayout.Behavior but I don't know which methods to override in order to achieve the effect that . I'm looking for.– Verhelst
Nov 19 '18 at 13:42
@Cheticamp I've already created a ReverseScrollBehavior extending the
AppBarLayout.Behavior but I don't know which methods to override in order to achieve the effect that . I'm looking for.– Verhelst
Nov 19 '18 at 13:42
I think
appbar_scrolling_view_behavior dose the same what you want. When you scroll up, It hides the toolbar.– Rumit Patel
Nov 22 '18 at 13:45
I think
appbar_scrolling_view_behavior dose the same what you want. When you scroll up, It hides the toolbar.– Rumit Patel
Nov 22 '18 at 13:45
@RumitPatel It depends on the context of scrolling up. I mean when the content scrolls up. so when you drag your finger from the center to the bottom, you scroll the content up, I want to hide the toolbar.
– Verhelst
Nov 23 '18 at 14:35
@RumitPatel It depends on the context of scrolling up. I mean when the content scrolls up. so when you drag your finger from the center to the bottom, you scroll the content up, I want to hide the toolbar.
– Verhelst
Nov 23 '18 at 14:35
add a comment |
1 Answer
1
active
oldest
votes
You need to create a method that will get the height of the screen and scroll events (up and down.) You can also toggle the visibility in the method.
This means you will set visibility to visible in your XML and do something like:
ChatButton Button;
ChatButtton.setVisibility = View.GONE
ChatButton.setVisibility = View.VISIBLE
to handle the toggle of the visibility based on the scroll events
answered Nov 21 '18 at 14:06
inspiredMichaelinspiredMichael
1246
I know how to do it using the scroll listener. I prefer to use the ScrollingViewBehavior method.
– Verhelst
Nov 23 '18 at 14:33
add a comment |
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1 Answer
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1 Answer
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oldest
votes
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oldest
votes
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oldest
votes
You need to create a method that will get the height of the screen and scroll events (up and down.) You can also toggle the visibility in the method.
This means you will set visibility to visible in your XML and do something like:
ChatButton Button;
ChatButtton.setVisibility = View.GONE
ChatButton.setVisibility = View.VISIBLE
to handle the toggle of the visibility based on the scroll events
answered Nov 21 '18 at 14:06
inspiredMichaelinspiredMichael
1246
I know how to do it using the scroll listener. I prefer to use the ScrollingViewBehavior method.
– Verhelst
Nov 23 '18 at 14:33
add a comment |
You need to create a method that will get the height of the screen and scroll events (up and down.) You can also toggle the visibility in the method.
This means you will set visibility to visible in your XML and do something like:
ChatButton Button;
ChatButtton.setVisibility = View.GONE
ChatButton.setVisibility = View.VISIBLE
to handle the toggle of the visibility based on the scroll events
answered Nov 21 '18 at 14:06
inspiredMichaelinspiredMichael
1246
I know how to do it using the scroll listener. I prefer to use the ScrollingViewBehavior method.
– Verhelst
Nov 23 '18 at 14:33
add a comment |
You need to create a method that will get the height of the screen and scroll events (up and down.) You can also toggle the visibility in the method.
This means you will set visibility to visible in your XML and do something like:
ChatButton Button;
ChatButtton.setVisibility = View.GONE
ChatButton.setVisibility = View.VISIBLE
to handle the toggle of the visibility based on the scroll events
answered Nov 21 '18 at 14:06
inspiredMichaelinspiredMichael
1246
You need to create a method that will get the height of the screen and scroll events (up and down.) You can also toggle the visibility in the method.
This means you will set visibility to visible in your XML and do something like:
ChatButton Button;
ChatButtton.setVisibility = View.GONE
ChatButton.setVisibility = View.VISIBLE
to handle the toggle of the visibility based on the scroll events
answered Nov 21 '18 at 14:06
inspiredMichaelinspiredMichael
1246
answered Nov 21 '18 at 14:06
inspiredMichaelinspiredMichael
1246
answered Nov 21 '18 at 14:06
inspiredMichaelinspiredMichael
1246
answered Nov 21 '18 at 14:06
inspiredMichaelinspiredMichael
1246
1246
I know how to do it using the scroll listener. I prefer to use the ScrollingViewBehavior method.
– Verhelst
Nov 23 '18 at 14:33
add a comment |
I know how to do it using the scroll listener. I prefer to use the ScrollingViewBehavior method.
– Verhelst
Nov 23 '18 at 14:33
I know how to do it using the scroll listener. I prefer to use the ScrollingViewBehavior method.
– Verhelst
Nov 23 '18 at 14:33
I know how to do it using the scroll listener. I prefer to use the ScrollingViewBehavior method.
– Verhelst
Nov 23 '18 at 14:33
add a comment |
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I'm just trying to do the inverse of the current
appbar_scrolling_view_behavior. Imagine having a chat application where the newest messages are starting from the bottom. When you scroll up, I want to hide the toolbar. The current situation with the AppBarLayout is when you scroll up, the toolbar is shown. My scrollflags are:app:layout_scrollFlags="scroll|enterAlways|snap"– Verhelst
Nov 19 '18 at 13:39
@Cheticamp I've already created a ReverseScrollBehavior extending the
AppBarLayout.Behaviorbut I don't know which methods to override in order to achieve the effect that . I'm looking for.– Verhelst
Nov 19 '18 at 13:42
I think
appbar_scrolling_view_behaviordose the same what you want. When you scroll up, It hides the toolbar.– Rumit Patel
Nov 22 '18 at 13:45
@RumitPatel It depends on the context of scrolling up. I mean when the content scrolls up. so when you drag your finger from the center to the bottom, you scroll the content up, I want to hide the toolbar.
– Verhelst
Nov 23 '18 at 14:35